Hello Dan,

Definitely lots of interesting things there. I wonder what Rotten Stone was in a list of chemicals offered in one of the ads.

I noticed an 1867 ad from Holmes, Booth & Haydens, indicating that they would continue to manufacture cameras, along with some comments about Charles F. Usener. Almost seems like trying to convince the readers that they were still in business, at least going by the manner in which it was worded. I would like to include a link back to your page, so I can reference that article. That's the latest published item I have seen so far for HB&H.

Ciao!

Gordon Moat Photography